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Extremely large-scale multiple-input-multiple-output (XL-MIMO), which offers vast spatial degrees of freedom, has emerged as a potentially pivotal enabling technology for the sixth generation (6G) of wireless mobile networks. With its…

Information Theory · Computer Science 2024-01-04 Zhe Wang , Jiayi Zhang , Hongyang Du , Dusit Niyato , Shuguang Cui , Bo Ai , Mérouane Debbah , Khaled B. Letaief , H. Vincent Poor

Extremely large-scale multiple-input multiple-output (XL-MIMO) is a promising technology for the sixth-generation (6G) mobile communication networks. By significantly boosting the antenna number or size to at least an order of magnitude…

Information Theory · Computer Science 2024-04-04 Haiquan Lu , Yong Zeng , Changsheng You , Yu Han , Jiayi Zhang , Zhe Wang , Zhenjun Dong , Shi Jin , Cheng-Xiang Wang , Tao Jiang , Xiaohu You , Rui Zhang

Extremely large-scale multiple-input multiple-output (XL-MIMO) enables the formation of narrow beams, effectively mitigating path loss in high-frequency communications. This capability makes the integration of wideband high-frequency…

Signal Processing · Electrical Eng. & Systems 2025-05-27 Peicong Zheng , Xuantao Lyu , Ye Wang , Yi Gong

Extremely large-scale multiple-input multiple-output (XL-MIMO) is a key technology for next-generation wireless communication systems. By deploying significantly more antennas than conventional massive MIMO systems, XL-MIMO promises…

Information Theory · Computer Science 2026-03-20 Ming Zeng , Ji Wang , Wanming Hao , Zheng Chu , Wenwu Xie , Quoc-Viet Pham

Extremely large-scale multiple-input multiple-output (XL-MIMO) architectures are a key enabler of forthcoming 6G wireless communication networks by allowing high data rates through massive spatial multiplexing. Here, we approach these…

Radio maps (RMs), which provide location-based pathloss estimations, are fundamental to enabling proactive, environment-aware communication in 6G networks. However, existing deep learning-based methods for RM construction often model…

Networking and Internet Architecture · Computer Science 2025-11-25 Honggang Jia , Nan Cheng , Xiucheng Wang

The unconventionally large aperture of extremely large-scale multiple-input multiple-output (XL-MIMO) arrays, in conjunction with the wider bandwidths in the upper-6 GHz (U6G) frequency bands, will very likely lead to non-negligible beam…

Signal Processing · Electrical Eng. & Systems 2026-05-12 Zhizheng Lu , Yu Han , Xiaojie Li , Shi Jin , Michail Matthaiou

Next generation communication systems require accurate beam alignment to counteract the impairments that characterize propagation in high-frequency bands. The overhead of the pilot sequences required to select the best beam pair is…

Signal Processing · Electrical Eng. & Systems 2024-02-27 Tien Ngoc Ha , Daniel Romero , Roberto López-Valcarce

Radio maps (RMs) serve as a critical foundation for enabling environment-aware wireless communication, as they provide the spatial distribution of wireless channel characteristics. Despite recent progress in RM construction using…

Machine Learning · Computer Science 2025-07-17 Xiucheng Wang , Qiming Zhang , Nan Cheng , Junting Chen , Zezhong Zhang , Zan Li , Shuguang Cui , Xuemin Shen

Radio map is an efficient demonstration for visually displaying the wireless signal coverage within a certain region. It has been considered to be increasingly helpful for the future sixth generation (6G) of wireless networks, as wireless…

Signal Processing · Electrical Eng. & Systems 2024-08-29 Shuhang Zhang , Shuai Jiang , Wanjie Lin , Zheng Fang , Kangjun Liu , Hongliang Zhang , Ke Chen

One of the most important technologies in the fifth generation (5G) and the sixth generation (6G) is massive multiple input multiple outputs (MIMO) or extremely large-scale MIMO (XL-MIMO). With the evolving high-frequency technologies in…

Information Theory · Computer Science 2025-03-25 Xiangyu Cui , Ki-Hong Park , Mohamed-Slim Alouini

Sixth generation (6G) systems require environment-aware communication, driven by native artificial intelligence (AI) and integrated sensing and communication (ISAC). Radio maps (RMs), providing spatially continuous channel information, are…

Machine Learning · Computer Science 2025-09-09 Honggang Jia , Xiucheng Wang , Nan Cheng , Ruijin Sun , Changle Li

Ultra-massive multiple-input multiple-output (UM-MIMO) technology is a key enabler for 6G networks, offering exceptional high data rates in millimeter-wave (mmWave) and Terahertz (THz) frequency bands. The deployment of large antenna arrays…

Signal Processing · Electrical Eng. & Systems 2025-03-19 Ahmed Hussain , Asmaa Abdallah , Abdulkadir Celik , Ahmed M. Eltawil

Accurate beam prediction is a key enabler for next-generation wireless communication systems. In this paper, we propose a multimodal large language model (LLM)-based beam prediction framework that effectively utilizes contextual…

Signal Processing · Electrical Eng. & Systems 2026-03-24 Tianhao Mao , Le Liang , Jie Yang , Xiao Li , Shi Jin , Geoffrey Ye Li

Radio environment maps (REMs) hold a central role in optimizing wireless network deployment, enhancing network performance, and ensuring effective spectrum management. Conventional REM prediction methods are either excessively…

Networking and Internet Architecture · Computer Science 2023-09-22 Hazem Sallouha , Shamik Sarkar , Enes Krijestorac , Danijela Cabric

Sixth-generation (6G) networks are envisioned to achieve full-band cognition by jointly utilizing spectrum resources from Frequency Range 1 (FR1) to Frequency Range 3 (FR3, 7-24 GHz). Realizing this vision faces two challenges. First,…

Information Theory · Computer Science 2026-04-14 Chi-Jui Sung , Fan-Hao Lin , Tzu-Hao Huang , Chu-Hsiang Huang , Hui Chen , Chao-Kai Wen , Henk Wymeersch

The Massive Multiple-Input Multiple-Output (M-MIMO) is considered as one of the key technologies in 5G, and future 6G networks. From the perspective of, e.g., channel estimation, especially for high-speed users it is easier to implement an…

Networking and Internet Architecture · Computer Science 2023-10-25 Marcin Hoffmann , Pawel Kryszkiewicz

Wideband extremely large-scale multiple-input-multiple-output (XL-MIMO) is a promising technique to achieve Tbps data rates in future 6G systems through beamforming and spatial multiplexing. Due to the extensive bandwidth and the huge…

Information Theory · Computer Science 2022-05-11 Mingyao Cui , Linglong Dai , Zhaocheng Wang , Shidong Zhou , Ning Ge

Extremely large-scale antenna array (ELAA) is promising as one of the key ingredients for the sixth generation (6G) of wireless communications. The electromagnetic propagation of spherical wavefronts introduces an additional…

Information Theory · Computer Science 2024-03-20 Xu Shi , Xuehan Wang , Jingbo Tan , Jintao Wang

Environment-aware 6G wireless networks demand the deep integration of multimodal and wireless data. However, most existing datasets are confined to 2D terrestrial far-field scenarios, lacking the 3D spatial context and near-field…

Signal Processing · Electrical Eng. & Systems 2026-05-22 Mengyuan Li , Qianfan Lu , Jiachen Tian , Hongjun Hu , Yu Han , Xiao Li , Chao-Kai Wen , Shi Jin
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